4G Systems XSJack T3i, User Manual, Page: 20 / 60

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Appendix
Signal tones
Request tones on startup
Enter PIN: 660Hz [0.5s], 440Hz [2s], repeating (page 7):
Enter PUK: 2 x (660Hz [125ms], pause [125ms]), 440Hz [2s], repea-
ting (page 17):
No or invalid SIM card: 4 x (660Hz [62.5ms], pause [62.5ms]), 440Hz
[2s], repeating (page 4, page 5):
General offhook tones
Standard dial tone: 425Hz continuous (*);
Forwarding active dial tone: 425*50Hz continuous (*) (page 18);
Roaming active dial tone: 425+212.5Hz continuous (*) (page 16):
Device locked: 440*50Hz [0.5s], pause [0.5s], repeating (page 17);
Device busy: 440 [0.5s], pause [0.5s], repeating (page 12):
Not registered to network: 660Hz [31.25ms], pause [118.75ms],
660Hz [31.25ms], pause [1.31875s], repeating (page 16):
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